活性粉末混凝土局部抗压性能试验研究  

THE TEST STUDY ON LOCAL COMPRESSIVE PERFORMANCE OF RPC

作　　者：张利娜[1] 巴方 张伟[3] 

机构地区：[1]北京城建五维市政工程有限公司,北京100039 [2]中铁第五勘察设计院集团有限公司,北京102600 [3]北京铁路局天津工务段,天津300010

出　　处：《工业建筑》2009年第S1期939-942,共4页Industrial Construction

摘　　要：对RPC材料的局部抗压性能进行研究。通过对39块RPC试块的局部抗压试验,确定RPC材料延性破坏的局压面积比应控制在Ab/Al<10;得出RPC的局部抗压开裂及极限强度提高系数分别为cβr=0.57016(Ab/Al)0.67135,β=0.9(Ab/Al)1/2。对有预应力孔道的RPC试块的局部抗压强度进行研究,并与预应力钢筋的预拉应力进行比较,最终确定RPC预应力结构锚下无需间接配筋。The main contents are local compressive performance.Whose cracking strength and ultimate strength are researched through the test of 39 RPC specimens.Finally it is concluded that RPC' best ratio in area of local compression is A_b/A_l<10 for ductility destruction;and the local compressive cracking strength increased coefficient β_(cr)=0.570 16(A_b/A_l)^(0.671 35),and the limiting strength increased coefficient β=0.9(A_b/A_l)^(1/2).The simulation research is done for prestressed RPC structure.And the result shows that it is unnecessary to use indirect steel under the anchor of prestressed RPC structure.

关 键 词：RPC 局部抗压 开裂强度提高系数 极限强度提高系数 锚下应力 

分 类 号：TU528.2[建筑科学—建筑技术科学]